To me the liver is pale and there is more fat that normal. Did you notice any yellow ascites fluid when the body was opened? In all of the necropsies I have done, I have only seen one hen with fatty liver. If you don’t give a lot of treats, scratch, or table scraps you probably don’t have too much to worry about. It might be a good idea to handle your hens occasionally just to feel of the breast muscles and how prominent the keel/breast bone is. Some fat hens will have a lot of poofiness over the tail. I questioned having roosters because I had a hen really beat up once by a young cockerel because she refused to mate with the him or the rooster. A prolapse is the usual reason other chickens will attack the vent, because of the red color.